These S’mores Bars have all the ooey-gooey flavors of classic campfire s’mores but in a cookie bar form! With only 15 minutes of prep, these bars are easy to share with a crowd for bake sales, potlucks, and summer nights.
Craving s’mores but without the hassle of a campfire? We’ve got you covered. We have been making these s’mores bars for years; they’re loaded with gooey marshmallows, a graham cracker crust, and a cookie base. With thousands of downloads, we know these are the best s’mores bars on the internet, and they’re the hit of any party we bring them to (you’ll be lucky to have leftovers).
Our family can fully attest to how popular these bars are too. My husband, Paul, has taken these to work multiple times and always comes home with requests for the recipe. I got the same comment recently from a bunch of teenagers when I took them to a church youth event. Which is quite a testament to the power of these addicting little bars.
Classic s’mores were one of my favorite summertime desserts growing up, and now it’s even easier to enjoy the same flavors indoors all year long with minimal mess. Don’t miss our other favorite s’mores-inspired desserts like our Chocolate Chip S’mores Cookies, S’mores Snack Mix, and this show-stopping S’mores Cake.
Reader Review: “Made this tonight.. followed recipe exactly and it was delicious. Husband said it was the best thing I’ve ever made (and he’s not even big on sweets so that’s how good it is).” -Maritza
What is a Smores Bar?
I’ve seen s’mores bars made by replacing some flour with crushed graham crackers or using marshmallow fluff in place of marshmallows. After multiple rounds of recipe testing on our end, I wanted to layer the flavors.
Our version of these bars starts out with a buttery graham cracker crust on the bottom, topped with a cookie dough-type batter that is loaded with chocolate and marshmallows, so every bite is layered with the classic flavors.
Reader Review: “DELISH! These were a hit at our 4th of July bbq.”
– Alex
Ingredients
- Graham Crackers: Pulsed until fine to make a graham cracker crust for the bars.
- Butter: Binds the crust together, I prefer unsalted but you can use salted too if you already have it on hand.
- Granulated Sugar: Sweetens both the crust and the cookie dough.
- Brown Sugar: Adds nice caramel and molasses-like flavor and chewiness to the cookie dough.
- Eggs: Binds the cookie dough together.
- Vanilla Extract: Always use pure here, avoid imitation for the best flavor.
- All-Purpose Flour: Gives structure to the cookie dough. Don’t pack your flour, just scoop and level with a spoon.
- Salt: Even baked goods need salt to help enhance all the flavors!
- Baking Soda: Leavening agent that tenderizes the cookie dough.
- Mini Marshmallows: Mini size is best for even flavors in every bite.
- Semisweet Chocolate Chips: For the cookie dough and for topping.
- Hershey Bars: It’s not s’mores without Hersey’s milk chocolate bars!
How to make S’mores Bars
- Make the graham cracker crust. Pulverize a bunch of graham crackers and mix with a little sugar and butter to make a crust. Press into the bottom of a 9×13-inch baking dish and bake for a few minutes until set.
- Make chocolate chip cookie dough! With marshmallows! Combine butter and sugars in a large mixing bowl and beat until light and fluffy. Add eggs and vanilla and beat again, then mix in flour, baking soda, and salt just until combined. Stir in chocolate chips and marshmallows.
- Press cookie dough into pan on top of graham cracker crust. Then bake for 18 minutes at 350°F.
- Top the partially baked bars with more marshmallows and broken up Hershey’s bars. Finish baking for another 9-11 minutes.
- Try to wait for the bars to cool enough to cut them into squares. It’s not easy. They will smell amazing.
Expert Tips
- Top with marshmallow and chocolate midway through baking. This allows for the cookie dough base to set first and to avoid the marshmallows and chocolate from melting too much.
- Sprinkle the bars with a handful of chocolate chips after taking them out of the oven. I originally did this for the photography, but that extra touch of chocolate was so good, I highly recommend it.
- Allow the bars to cool completely before slicing. They need to set, if you slice too early, they become an ooey, gooey mess!
- Double marshmallow goodness. That’s where our recipe stands out, we add marshmallows both to the cookie dough batter as well as on top for that extra touch of chew and sweetness.
- Allow the graham cracker crust to cool before topping with the cookie dough. This only takes a couple of minutes, but it prevents the cookie dough from starting to cook in a warm baking dish.
Variations
- Add some peanut butter! You can add 1 cup of peanut butter to the cookie dough mixture for a peanut butter s’mores bar version. For even more peanut butter flavor, add chopped Reese’s Peanut Butter cups to amp up the flavor.
- Make an oatmeal cookie variation. Try mixing in 2 cups old-fashioned oats to the cookie dough batter for extra chewy smores bars with an oatmeal cookie twist.
- Swap the milk chocolate for dark chocolate. If you love a little bit of a deeper cocoa flavor, this dessert is delicious with dark chocolate too.
Storage
Once the s’mores bars have cooled completely, cut them into squares then store in an airtight container on the counter for 4-5 days. If you need to layer them, place a piece of parchment paper or waxed paper between the layers to keep them from sticking.
You can also freeze the s’mores bars for up to 2 months in an airtight container in the freezer. Let them thaw on the counter for 3-4 hours before serving. You might even want to warm them in the microwave for a few seconds to freshen them up a bit too.
It’s easy to make these bars ahead of time, make them the morning of an event, even the night before and make sure they are stored airtight to keep their chew.
FAQs
Continue baking the bars a couple more minutes until they are just set in the center, as ovens can often vary in temperature. Avoid over-baking or you could risk the bars not being chewy in texture.
Lightly grease your knife with cooking spray to prevent the gooey marshmallows from sticking.
You want them to cool completely to allow the different layers to set for even slicing and serving. You can warm them to serve if you desire!
More S’mores Dessert Recipes:
S’mores Bars
Ingredients
Graham cracker crust
- 2 1/4 cups graham crackers (1 ½ sleeves, crushed)
- 2/3 cup salted butter melted
- 1/3 cup granulated sugar
Cookie top
- 1 cup salted butter softened
- 3/4 cup granulated sugar (150g)
- 3/4 cup packed brown sugar (150g)
- 2 large eggs
- 1 teaspoon vanilla
- 2 1/4 cups all-purpose flour scooped and leveled (317g)
- 1 teaspoon salt
- 1 teaspoon baking soda
- 3 cups miniature marshmallows divided
- 1 cup semi-sweet chocolate chips
- 3 Hershey bars broken up
Instructions
- Preheat the oven to 350°F. In a medium bowl, mix together the graham cracker crumbs, melted butter, and sugar using a fork, then press the crumb mixture into the bottom of a 13×9-inch rectangular greased baking dish. Bake for 7 minutes, then remove from oven and allow to cool slightly.2 ¼ cups graham crackers, 2/3 cup salted butter, ⅓ cup granulated sugar
- Meanwhile, cream the butter and sugars together. Add in eggs and vanilla and beat well until light and creamy. Stir in flour, salt and baking soda just until combined. Then mix in the chocolate chips and 2 cups of the marshmallows by hand.1 cup salted butter, ¾ cup granulated sugar, ¾ cup packed brown sugar, 2 large eggs, 1 teaspoon vanilla, 2 ¼ cups all-purpose flour, 1 teaspoon salt, 1 teaspoon baking soda, 3 cups miniature marshmallows, 1 cup semi-sweet chocolate chips
- Carefully spread cookie mixture over the graham cracker crust by dropping spoonfuls of batter evenly around the dish and then gently pressing it together so you aren’t disturbing the graham cracker crust beneath.
- Bake for 18 minutes at 350°F, then quickly remove from the oven, top with broken pieces of Hershey Bars and sprinkle with remaining 1 cup marshmallows. Return to oven to finish baking. Bake 9-11 minutes more, until golden brown on top. The center should be mostly set but still just a little undercooked. Don't overcook – you want to eat these just a little on a the gooey side, trust me.3 Hershey bars
- Remove and allow to cool completely before cutting and serving.
Video
Notes
- Store in an airtight container on the counter for 4-5 days. Layer them with a piece of parchment paper or waxed paper to keep them from sticking.
- You can also freeze the s’mores bars for up to 2 months in an airtight container in the freezer. Let them thaw on the counter for 3-4 hours before serving. You might even want to warm them in the microwave for a few seconds to freshen them up a bit too.
- It’s easy to make these bars ahead of time. Make sure they are stored airtight to keep their chew.
Dude, you are way more generous than I am – sending this for others to munch! I’d hide in my closet and not share with my kids!
You got me at smores two of my favorites in one bite without the mess. I need one of this now =) with a scoop of ice cream Oh my goodness I am hungry
Oh these look so good!! My kids love smores so if I made this – it would be over in an instant. Yum.
Ok, my mouth was watering as I read this recipe. With summer entertaining season here, I know these would be a welcome addition to the dessert rotation. I know it will be a crowd pleaser,..and I won’t have leftovers!!
What a great idea for smores. Love that you made them into bars. I could see these as being devoured by so many members of my family!
Oh my goodness, I love this recipe so much! I’m not much into dessert bars, but this looks like such a great way to enjoy the flavors of s’mores without the mess. Yum!
Looks like very good snacks for kids! I love that you made it in bars for small bites 🙂 My kids favorite snack that I making with vegan version.
I love s’mores! What a great idea to turn them into a bar. Yummy!
I like your idea of making it into smores bars.these are kids favorite. Now I know what to do when it comes to an easy dessert.
Summer is coming and perfect time to enjoy some smores my son would love this
They look terrific! They wouldn’t last too long around here. I’d have to double the chocolate, because I have a habit of eating it instead of putting it into the recipe.
OMG, look at those chunky marshmallows + chocolate bars peeking through the bars …. that absolutely gorgeous!!! I love smores but never tried making bars and this is a fantastic idea 🙂
This is so perfect! S’mores without the mess of the campfire and marshmallows burning to a crisp! This is like having my bars and eating them too!! Will have to make these for the grandsons.
Would it be a sin to have them for breakfast? I am yet to have breakfast and I am craving for some. I would not be sharing this with anyone.
These are the most perfect looking bars I have seen! How fabulously made and certainly scrumptious what with all that chocolate!
Everything about this recipe make is drool worthy,, but these bars are really making my stomach growl 😀
This looks like perfect spring family treat. My kiddo would LOVE this. Love the addition of mini marshmallows. It’s great for kids party too. I’m definitely saving this recipe. Looks delicious with that chocolate on top. YUM!
I literally love all things smores and can and will eat them at any time of year. These would be dangerous to make for me, but I’m so tempted!
Literally eating a S’more while reading this and it’s so messy. Def could have done with one of these instead ?
I love this sweet, very good.
Loved the decor and mostly marshmallows!
Shortening is added in the recipe but is not listed in the ingredients. How much and what kind?
Whoops! Sorry! When I originally posted the recipe I used half shortening and half butter, but have since switched to using all butter. I updated that in the recipe ingredients list but must have missed it in the instructions! I fixed it now though! Thanks for asking!
I made these and took them to a party and people raved (and raved)! They came out amazing. The only thing I did slightly different was use dark brown sugar and some milk chocolate chips bc I didn’t have enough bars.
I would like to make a few batches ahead of time for a BaByQ shower. Can they be frozen?
Most of the comments on this recipe are from people who didn’t actually make it and are just saying that it looks good. It does, but in practice it turned out only *okay*. Overall there’s way too much butter in the batter to the point where that’s all I could taste. It was hard to tell if they were actually cooked because of the amount of butter. Also, it was a lot of work for the end result. I’ll be giving these to my son in college rather than taking them to a potluck as planned. Good idea, but I won’t be making again.
Cake out extremely doughy. May be too much butter for the recipe. I put mine back in the oven to cook longer. Probaly wont make again. Good concept but the recipe with instructions did not work.
I made these s’mores bars for a family gathering. They were the hit of the party. Everyone loved them! I took someone to my staff and they loved them too. Everyone wanted the recipe. Thanks for sharing 😁
This did not turn out well for me. I’m wondering if it makes a difference if I use a metal pan vs. a glass pan? What did you use?
That’s too bad! I’ve used both and they always turn out great!
Can’t wait to make these! Do you use salted or unsalted butter?
I always use salted butter!
I think it’s important to indicate that in the recipe because that can make a big difference :/. I just made them and am waiting for them to cool, but in my experience most recipes call for unsalted butter so that is what I used. Hopefully they came out ok. I think I left them in a minute too long because they’re a bit past ‘golden’ 🙁 so fingers crossed
These were super tasty and very gooey (as warned). I made them to take to a scout event, but could not serve them because they fell apart and were so messy.
Delicious bars they’re so tasty and gooey. You could probably get away with putting half the butter. My bars were drenched in butter on the bottom. Also my bake time took over an hour! I followed the recipe exactly
Bummed. These looked so good, but mine did not turn out. They never fully cooked-just simmered in all the butter. This I may opt for less next try.
Sooo good! I’ve been baking a lot in quarantine and this is by far my favorite thing I’ve made! Thank you for the recipe!
That makes me so happy to hear! All the baking has been the best part of the quarantine!
Hey for this recipe do you need to grease the baking pan?
What did you use to grease the baking pan?
I don’t bother to grease the pan if I’m using a piece of parchment paper, but otherwise just a baking spray with flour in it like Baker’s Joy is my choice.
Not if you are using parchment paper to line the pan.
I made these today and they were hands down one of my favorites! They were perfect and everyone loved them! Thank you for the tasty recipe! ❣️
Made these s’mores bars for my coworkers and they loved them. I barely got a bite! I may have used more then a handful of morsels at the end so I am gonna go easy next time. They were excellent and easy to make. Everyone enjoyed and will definitely be making these again! 😋
2nd time I’ve made these, love them and so did all my coworkers?
Question??? Can I make these the day before a party and reheat next day before heading to party?
Yes, you can make these ahead and warm them up, although the marshmallows might melt away with the reheating. I would recommend just serving them room temp. 🙂
This is absolutely a wonderful recipe. However, the chocolate from the Hershey’s candy bar plus the chocolate pieces need to be added AFTER everything has completely been cooked and AFTER it has been cooling for about 12 minutes to get the ‘signature’ HERSHEY stamp on bar to stay visible. Otherwise, it will all melt in if you do as recommended – which is to throw the chocolates on top and cook for an additional 9-11 minutes more. You don’t get the signature look on the top unless you let everything cool down a while first. But hands down everyone’s favorite as it truly carries the taste of a smore with the additional richness of butter. Soooo good.
Can you use jumbo marshmallows instead
You would need to cut them up a bit first.
S’mores are one of my favorite treats. They take me back to being a kid sitting around a camp fire. You knocked it out of the park with this recipe.
Made these for an outdoor (COVID) New Year’s Eve party, thought it would be a fitting outdoor dessert to bring….they were a HIT! My family microwaved a leftover piece for 20 seconds & said it was just like eating a roasted s’more.
Absolutely obsessed with these! So quick and easy to mix up, and they were the HIT of our Super Bowl spread! Definitely adding this to our regular dessert rotation 😊
I’m so glad to hear that! These really are a great Super Bowl dessert!
Made these twice so far and I love them! One question – mine get quite golden brown by the end of the initial 18 minutes, and if I leave them in for 9 more minutes with the additional chocolate & marshmallows they start to burn. Would you recommend turning the temperature down throughout/for one period, or shortening the baking time? I have checked the temp of the oven with two different thermometers and it’s right on 350, so unfortunately that’s not the issue. Thank you!
If your oven temp is right and it’s getting pretty golden on top, I would recommend covering the bars with aluminum foil rather than decreasing the temperature. That should allow the bars to cook through without browning as much on top!
I made this recipe today so I could use up smores ingredients in my pantry. THIS RECIPE ROCKS!! I love chewy and gooey cookies and this fits the bill. I didn’t have mini marshmallows so I just cut regular marshmallows into quarters with kitchen scissors. Perfect substitute. Thanks for sharing this awesome recipe with all of us. This recipe is a keeper and I’ll make it again and again.
I used 3/4c butter for the cookie mixture and they came out perfectly!
These are amazing, the milk chocolate Hershey bars are a bit too sweet for me next time I’d try with dark!! But really delicious I know they won’t last long 😆
This is such a yummy treat ,for me serving this with a scoop of vanilla ice cream topped it beautifully!
So good Everyone loved it and asked for more.
So good Everyone loved it and asked for more. First time I’ve posted a comment
I made these yesterday and they are soooo yummy. I did use the jumbo marshmallows as it’s all I had and they didn’t turn out as pretty as these, so next time I will use the mini marshmallows. Thanks for the recipe!
So yummy I have made it so many times and shared it with people I know who will like it.
I made the recipe and it turned out great. Not only was it so cute with the prices of Hershey bars on top, but it was not hard to achieve the look. Super easy but eye catching desert!